cumulative

Question 1

changes in – produces dimensional change of dental materials

Answer 1

temp

Question 2

excessive contraction –>

Answer 2

microleakage and secondary caries

Question 3

excessive expansion –>

Answer 3

pressure on pulp, post-operative sensitivity, restoration protrudes

Question 4

force per unit area

Answer 4

stress

Question 5

unit of stress

Answer 5

N/m^2 (Pa)

Question 6

when stress exceeds the – of an object, object breaks

Answer 6

cohesive strength

Question 7

stress =

Answer 7

force/ cross-sectional area

Question 8

Force (N) = 111, Stress (MPa) = 172.4

Answer 8

(mm^2) = 0.645 Area

Question 9

elastic limit or yield strength/point: the max stress a material can withstand without –

Answer 9

permanent deformation

Question 10

tipping point between elastic and plastic strain

Answer 10

elastic limit or yield strength/point

Question 11

current flow by a – between two dissimilar metals in contact in a solution

Answer 11

voltage difference

Question 12

Galvanic corrosion, Al –

Answer 12

dissolves (corrodes)

Question 13

Al forms –

Answer 13

anode

Question 14

Copper is less likely to –

Answer 14

corrode

Question 15

copper forms –

Answer 15

cathode

Question 16

the greater the difference in voltage –>

Answer 16

greater current flow

Question 17

anode in mouth

Answer 17

amalgam

Question 18

cathode in mouth

Answer 18

gold

Question 19

electrolyte in mouth

Answer 19

saliva

Question 20

what kind of metal corrodes?

Answer 20

more active (more base)

Question 21

what kind of metal resists corrosion?

Answer 21

less active (more noble)

Question 22

pain sensation by electric current generated in a galvanic cell

Answer 22

galvanic shock